Home / 21,883.38-30,197.26-12,320.20

Finding the Fourth Proportional to 21,883.38, 30,197.26 and 12,320.20

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Solution

The fourth proportional to 21,883.38, 30,197.26 and 12,320.20 is: 17,000.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,883.38 : 30,197.26 = 12,320.20 : x
  2. Step 2: Convert to fraction form
    21,883.38/30,197.26 = 12,320.20/x
  3. Step 3: Cross multiply
    21,883.38x = 30,197.26 × 12,320.20
  4. Step 4: Simplify right side
    21,883.38x = 372,036,282.65
  5. Step 5: Solve for x
    x = 372,036,282.65/21,883.38
  6. Step 6: Final answer
    x = 17,000.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.